Resistor mounting



Jan. 5, 1954 R. E. DU BOIS 2,665,357

RESISTOR MOUNTING Filed Feb. 27, 1952 INVENTOR ROBERT E. Du BOIS ATTORNEY Patented Jan. 5, 1954 UNITED STATES PATENT OFFICE 2,665,357 RESISTOR MOUNTING Robert. E..Du.-Bois, Hammond, Ind. Application February 27,

3 Claims. (01. 201-63) This; invention relates generally to resistor structures and more particularly to the mounting structure for a plurality of flat resistor grids secured together in spaced face-to-face relationship.

The primary object-of this invention is to provide an improved supporting structure for resistor grids which precludes the necessity of ceramic and other types of insulators.

Another object of this invention is to provide an improved supporting structure for resistor grids in which the supporting elements are coated with a material having good insulating properties.

A more specific object of this invention is to provide an improved supporting structure for resistor grids in which the supporting elements are anodized, thereby insulating properties.

With the foregoing and other objects in view the invention resides in the following specification and appended claims, certain embodiments and details of construction of which are shown in the accompanying drawing in which:

Figure 1 is a partial view in end elevation of a typical resistor structure to which this invention may be applied;

Figure 2 is a partial view in section of a supporting rod for the resistors of Figure 1;

Figure 3 is a supporting rod, Figure 2;

Figure 4 is a partial view, in section, of a modified form of the invention;

Figure 5 is a full cross sectional view of the modified supporting rod taken along the lines 55 of Figure 4; and

Figure 6 is a cross sectional view of the spacing washers for the resistors of Figure 1.

A resistor structure of the prior art to which taken along the lines 33 of is necessary to provide a dissipating means for electrical energy.

full cross sectional view of the l 1952, Serial No. 273,687

This invention resolves it porting resistor carrying rods 2 rality of resistor grids 4 are supported at either end on the rods 2 and 3, each are not shown here.

Referring to Figures 2 and 3, a portion of a rod 6 is shown which would be suitable for use as the rods 2 and 3 of Figure 1. The rod 6 comprises a piece of tubular metal 1 to which a ous material would be.

The modification of Figures 4 and 5 was designed for use with heavy grid installations and Figure 6 shows a sectional view of a spacing washer 5 with an insulating coating Hi applied thereto over all of its surface area.

Thus it is seen that by utilizing the coated supporting and spacing elements of Figures 2, 4 and 6 for the resistor 4 of Figure 1, a resistor structure results in which the likelihood of insulator breakage prevalent in prior structures is obviated, while the required insulation between grids and between the grids and frame I is maintained.

The invention is not intended to be limited in scope to the structure shown in the various figures, although a very practical application is that type of resistor structure shown in Figure 1. The invention may be applied in any resistor or conductor structural formation where an insulator support or covering is necessary.

I claim:

1. A resistance structure comprising a plurality of spaced resistor grids, a plurality of aluminum supporting elements extending through supporting said grids in a frame, aluminum spacers carried on said elements cetween said grids, said elements and spacers having an anodic coating of aluminum oxide thereon to prevent current leakage between the various parts of the structure.

2. A resistor grid mount comprising a first supporting tube having an outer surface coating of insulating material, and a second supporting tube concentric with said first tube having an inner surface coating of insulating material contacting the outer coating of the first tube and having an outer surface coating of insulating material.

3. A resistor grid mount comprising a first supporting aluminum tube and a second supporting aluminum tube concentric with and surrounding the first tube, said first tube having an outer surand said second tube havanodic coating. ROBERT E. DU BOIS.

face anodic coating ing an inner and outer References Cited in the file of this patent UNITED STATES PATENTS 

